Strap hook



FIG. 1 is front, top, left-side perspective view of a strap hook showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof. 

The ornamental design for a strap hook, as shown. 